From: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
To: Andrew Morton <akpm@osdl.org>
Cc: Christoph Hellwig <hch@infradead.org>,
lkml <linux-kernel@vger.kernel.org>,
David Miller <davem@davemloft.net>,
Ulrich Drepper <drepper@redhat.com>,
netdev <netdev@vger.kernel.org>,
Zach Brown <zach.brown@oracle.com>
Subject: Re: [take13 1/3] kevent: Core files.
Date: Fri, 25 Aug 2006 10:32:38 +0400 [thread overview]
Message-ID: <20060825063238.GD16504@2ka.mipt.ru> (raw)
In-Reply-To: <20060824232024.0d230823.akpm@osdl.org>
On Thu, Aug 24, 2006 at 11:20:24PM -0700, Andrew Morton (akpm@osdl.org) wrote:
> On Fri, 25 Aug 2006 09:48:15 +0400
> Evgeniy Polyakov <johnpol@2ka.mipt.ru> wrote:
>
> > kmalloc is really slow actually - it always shows somewhere on top
> > in profiles and brings noticeble overhead
>
> It shouldn't. Please describe the workload and send the profiles.
epoll based trivial server (accept + sendfile for the same file, about
4k), httperf with big amount of simulateneous connections. 3c59x NIC
(with e1000 there were no ioreads and netif_rx).
__alloc_skb calls kmem_cache_alloc() and ___kmalloc().
16158 1.3681 ioread16
8073 0.6835 ioread32
3485 0.2951 irq_entries_start
3018 0.2555 _spin_lock
2103 0.1781 tcp_v4_rcv
1503 0.1273 sysenter_past_esp
1492 0.1263 netif_rx
1459 0.1235 skb_copy_bits
1422 0.1204 _spin_lock_irqsave
1145 0.0969 ip_route_input
983 0.0832 kmem_cache_free
964 0.0816 __alloc_skb
926 0.0784 common_interrupt
891 0.0754 __do_IRQ
846 0.0716 _read_lock
826 0.0699 __netif_rx_schedule
806 0.0682 __kmalloc
767 0.0649 do_tcp_sendpages
747 0.0632 __copy_to_user_ll
744 0.0630 pskb_expand_head
--
Evgeniy Polyakov
next prev parent reply other threads:[~2006-08-25 6:33 UTC|newest]
Thread overview: 143+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <12345678912345.GA1898@2ka.mipt.ru>
2006-08-17 7:43 ` [take11 0/3] kevent: Generic event handling mechanism Evgeniy Polyakov
2006-08-17 7:43 ` [take11 1/3] kevent: Core files Evgeniy Polyakov
2006-08-17 7:43 ` [take11 2/3] kevent: poll/select() notifications Evgeniy Polyakov
2006-08-17 7:43 ` [take11 3/3] kevent: Timer notifications Evgeniy Polyakov
2006-08-21 10:19 ` [take12 0/3] kevent: Generic event handling mechanism Evgeniy Polyakov
2006-08-21 10:19 ` [take12 1/3] kevent: Core files Evgeniy Polyakov
2006-08-21 10:19 ` [take12 2/3] kevent: poll/select() notifications Evgeniy Polyakov
2006-08-21 10:19 ` [take12 3/3] kevent: Timer notifications Evgeniy Polyakov
2006-08-21 11:12 ` Christoph Hellwig
2006-08-21 11:18 ` Evgeniy Polyakov
2006-08-21 11:27 ` Arjan van de Ven
2006-08-21 11:59 ` Evgeniy Polyakov
2006-08-21 12:13 ` Arjan van de Ven
2006-08-21 12:25 ` Evgeniy Polyakov
2006-08-21 14:25 ` Thomas Gleixner
2006-08-22 18:25 ` Evgeniy Polyakov
2006-08-21 12:09 ` Evgeniy Polyakov
2006-08-22 4:36 ` Andrew Morton
2006-08-22 5:48 ` Evgeniy Polyakov
2006-08-21 12:37 ` [take12 4/3] kevent: Comment cleanup Evgeniy Polyakov
2006-08-23 8:51 ` [take12 1/3] kevent: Core files Eric Dumazet
2006-08-23 9:18 ` Evgeniy Polyakov
2006-08-23 9:23 ` Eric Dumazet
2006-08-23 9:29 ` Evgeniy Polyakov
2006-08-22 7:00 ` [take12 0/3] kevent: Generic event handling mechanism Nicholas Miell
2006-08-22 7:24 ` Evgeniy Polyakov
2006-08-22 8:17 ` Nicholas Miell
2006-08-22 8:23 ` David Miller
2006-08-22 8:59 ` Nicholas Miell
2006-08-22 14:59 ` James Morris
2006-08-22 20:00 ` Nicholas Miell
2006-08-22 20:36 ` David Miller
2006-08-22 21:13 ` Nicholas Miell
2006-08-22 21:25 ` David Miller
2006-08-22 22:58 ` Nicholas Miell
2006-08-22 23:46 ` Ulrich Drepper
2006-08-23 1:51 ` Nicholas Miell
2006-08-23 6:54 ` Evgeniy Polyakov
2006-08-22 8:37 ` Evgeniy Polyakov
2006-08-22 9:29 ` Nicholas Miell
2006-08-22 10:03 ` Evgeniy Polyakov
2006-08-22 19:57 ` Nicholas Miell
2006-08-22 20:16 ` Evgeniy Polyakov
2006-08-22 21:13 ` Nicholas Miell
2006-08-22 21:37 ` Randy.Dunlap
2006-08-22 22:01 ` Andrew Morton
2006-08-22 22:17 ` David Miller
2006-08-22 23:35 ` Andrew Morton
2006-08-22 22:58 ` Nicholas Miell
2006-08-22 23:06 ` David Miller
2006-08-23 1:36 ` The Proposed Linux kevent API (was: Re: [take12 0/3] kevent: Generic event handling mechanism.) Nicholas Miell
2006-08-23 2:01 ` The Proposed Linux kevent API Howard Chu
2006-08-23 3:31 ` David Miller
2006-08-23 3:47 ` Nicholas Miell
2006-08-23 4:23 ` Nicholas Miell
2006-08-23 6:22 ` The Proposed Linux kevent API (was: Re: [take12 0/3] kevent: Generic event handling mechanism.) Evgeniy Polyakov
2006-08-23 8:01 ` Nicholas Miell
2006-08-23 18:24 ` The Proposed Linux kevent API Stephen Hemminger
2006-08-22 23:22 ` [take12 0/3] kevent: Generic event handling mechanism Randy.Dunlap
[not found] ` <b3f268590608220957g43a16d6bmde8a542f8ad8710b@mail.gmail.com>
2006-08-22 17:09 ` Jari Sundell
2006-08-22 18:01 ` Evgeniy Polyakov
2006-08-22 19:14 ` Jari Sundell
2006-08-22 19:47 ` Evgeniy Polyakov
2006-08-22 22:51 ` Jari Sundell
2006-08-22 23:11 ` Alexey Kuznetsov
2006-08-23 0:28 ` Jari Sundell
2006-08-23 0:32 ` David Miller
2006-08-23 0:43 ` Jari Sundell
2006-08-23 6:56 ` Evgeniy Polyakov
2006-08-23 7:07 ` Andrew Morton
2006-08-23 7:10 ` Evgeniy Polyakov
2006-08-23 9:58 ` Andi Kleen
2006-08-23 10:03 ` Evgeniy Polyakov
2006-08-23 7:35 ` David Miller
2006-08-23 8:18 ` Nicholas Miell
2006-08-23 7:43 ` Ian McDonald
2006-08-23 7:50 ` Evgeniy Polyakov
2006-08-23 16:09 ` Andrew Morton
2006-08-23 16:22 ` Evgeniy Polyakov
2006-08-23 8:22 ` Jari Sundell
2006-08-23 8:39 ` Evgeniy Polyakov
2006-08-23 9:49 ` Jari Sundell
2006-08-23 10:20 ` Evgeniy Polyakov
2006-08-23 10:34 ` Jari Sundell
2006-08-23 10:51 ` Evgeniy Polyakov
2006-08-23 12:55 ` Jari Sundell
2006-08-23 13:11 ` Evgeniy Polyakov
2006-08-22 11:54 ` [PATCH] kevent_user: remove non-chardev interface Christoph Hellwig
2006-08-22 12:17 ` Evgeniy Polyakov
2006-08-22 12:27 ` Christoph Hellwig
2006-08-22 12:39 ` Evgeniy Polyakov
2006-08-22 11:55 ` [PATCH] kevent_user: use struct kevent_mring for the page ring Christoph Hellwig
2006-08-22 12:20 ` Evgeniy Polyakov
2006-08-23 11:24 ` [take13 0/3] kevent: Generic event handling mechanism Evgeniy Polyakov
2006-08-23 11:24 ` [take13 1/3] kevent: Core files Evgeniy Polyakov
2006-08-23 11:24 ` [take13 2/3] kevent: poll/select() notifications Evgeniy Polyakov
2006-08-23 11:24 ` [take13 3/3] kevent: Timer notifications Evgeniy Polyakov
2006-08-23 12:51 ` [take13 1/3] kevent: Core files Eric Dumazet
[not found] ` <20060823132753.GB29056@2ka.mipt.ru>
2006-08-23 13:44 ` Evgeniy Polyakov
2006-08-24 20:03 ` Christoph Hellwig
2006-08-25 5:48 ` Evgeniy Polyakov
2006-08-25 6:20 ` Andrew Morton
2006-08-25 6:32 ` Evgeniy Polyakov [this message]
2006-08-25 6:58 ` Andrew Morton
2006-08-25 7:20 ` Evgeniy Polyakov
2006-08-25 7:01 ` David Miller
2006-08-25 7:13 ` Andrew Morton
[not found] ` <Pine.LNX.4.63.0608231313370.8007@alpha.polcom.net>
[not found] ` <20060823122509.GA5744@2ka.mipt.ru>
[not found] ` <Pine.LNX.4.63.0608231437170.8007@alpha.polcom.net>
[not found] ` <20060823134227.GC29056@2ka.mipt.ru>
2006-08-23 18:56 ` [take13 0/3] kevent: Generic event handling mechanism Evgeniy Polyakov
2006-08-23 19:42 ` Evgeniy Polyakov
2006-08-25 9:54 ` [take14 " Evgeniy Polyakov
2006-08-25 9:54 ` [take14 1/3] kevent: Core files Evgeniy Polyakov
2006-08-25 9:54 ` [take14 2/3] kevent: poll/select() notifications Evgeniy Polyakov
2006-08-25 9:54 ` [take14 3/3] kevent: Timer notifications Evgeniy Polyakov
2006-08-27 21:03 ` [take14 0/3] kevent: Generic event handling mechanism Ulrich Drepper
2006-08-28 1:57 ` David Miller
2006-08-28 2:11 ` Ulrich Drepper
2006-08-28 2:40 ` Nicholas Miell
2006-08-28 2:59 ` Nicholas Miell
2006-08-28 11:47 ` Jari Sundell
2006-08-31 7:58 ` Evgeniy Polyakov
2006-09-09 16:10 ` Ulrich Drepper
2006-09-11 5:42 ` Evgeniy Polyakov
2006-09-04 10:14 ` [take15 0/4] " Evgeniy Polyakov
2006-09-04 9:58 ` Evgeniy Polyakov
2006-09-04 10:14 ` [take15 1/4] kevent: Core files Evgeniy Polyakov
2006-09-04 10:14 ` [take15 2/4] kevent: poll/select() notifications Evgeniy Polyakov
2006-09-04 10:14 ` [take15 3/4] kevent: Socket notifications Evgeniy Polyakov
2006-09-04 10:14 ` [take15 4/4] kevent: Timer notifications Evgeniy Polyakov
2006-09-05 13:39 ` Arnd Bergmann
2006-09-06 6:42 ` Evgeniy Polyakov
2006-09-05 13:28 ` [take15 1/4] kevent: Core files Arnd Bergmann
2006-09-06 6:51 ` Evgeniy Polyakov
2006-09-04 10:24 ` [take15 0/4] kevent: Generic event handling mechanism Evgeniy Polyakov
2006-09-06 11:55 ` [take16 " Evgeniy Polyakov
2006-09-06 11:55 ` [take16 1/4] kevent: Core files Evgeniy Polyakov
2006-09-06 11:55 ` [take16 2/4] kevent: poll/select() notifications Evgeniy Polyakov
2006-09-06 11:55 ` [take16 3/4] kevent: Socket notifications Evgeniy Polyakov
2006-09-06 11:55 ` [take16 4/4] kevent: Timer notifications Evgeniy Polyakov
2006-09-06 13:40 ` [take16 1/4] kevent: Core files Chase Venters
2006-09-06 13:54 ` Chase Venters
2006-09-06 14:03 ` Evgeniy Polyakov
2006-09-06 14:23 ` Chase Venters
2006-09-07 7:10 ` Evgeniy Polyakov
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